sure, if you know how to set up wordpress sites you should set up mass niches websites and earn adsence off them might take you 6 months till you see big results thou but you earn big if you know what your doing

I think OP means coding theme and widgets not just setting up a site. In this case I think you could make some money. Not really sure how but for starters you could build link backs to your own site in the themes and widgets.

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